How does a shark's cardiovascular system differ from that of a mammal?

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity